Support for relatively movable



June 15,1943. H. B. SKLAR SUPPORT FOR RELATIVELY MOVABLE PARTS FiledSept. 27. 1941 INVENTORY I 'filfl 1 IYTTOK BY H Patented June 15, 1943SUPPORT FOR RELATIVELY PARTS 7 1 MOVABLE Harry B. Sklar, Los Angela sCalif.

Application September 27, 1941, Serial No. 412,544

8 Claims. (01. 16-446) My invention relates to a support for relativelymovable parts. The primarily intended use i of the present support isfor a bed davenport, but the present hardware may be used to support onemovable part relatively to another on many other articles.

My invention has for its object to provide such a support that ispositive in operation, convenient in use, easily installed in a workingposition,

economical of manufacture, relatively simple and applied an embodimentof my present invention.-

Figure 2 is an enlarged, partly broken, side elevation illustrating mysupport in one of its operative positions. 7

Figure 3 is a view partly in section looking in the direction of thearrows 3-3.0f Figure 2.

Figure 4' is a side elevational view of my support in another positionthan that shown in Figure 2. p

Figure5 is a plan view of the position shown in Figure 4.

' Figure 6 is an enlarged face view of a latch member comprised in myinvention.

Figure 7 is a view looking in the directionof the arrow A of Figure 6.

Figure 8 is a view similar to Figure Texcept that Figure 8 shows amodified construction.

Figure 9 is a broken side elevation of the modified construction shownin Figure 8.

Figure 10 is a perspective view of relatively movable bracket platescomprised in my invention.

Referring more in detail to the drawing, the reference number l2generally indicates the frame of a seat member of abed davenport or of amember of some other article to which my invention is applied. Thereference number l3 generally designates the frame for a back memberforsaid bed davenport.

The frame of the bed davenport is generally indicated at 14. The seatframe I2 is slidable and pivotedon the top of the body frame 14.

notch 38 when the backlti Bracket plates l5 and 16 are respectivelybolted upon the seat member I2 and back member l3 through theintermediary of their respective flanges I! and I8. The bracket platesare pivoted to each other by a rivet l9. A brace 20 is also pivoted tothe bracket plates by means of the rivet I9. The opposite end of thebrace 2!] is pivoted on the frame I l by means of a rivet 2|. A plate 22mounts the rivet 2 on the frame l4.

A brace 23 is pivotally mounted upon an opposite portion of the bracketplate l6 by a rivet 24. The opposite end of the brace 23 is pivoted on arivet 25 which in turn is mounted on a plate 26 on the frame |4.- Alatch member 21 is pivoted on the bracket plate" l6 by means of'a rivet23. The rivet 2i extends through an oversize opening 29 in the latch 21.The oversize opening 29 permits lat eral rocking of the latch 21, asindicated by the broken line 30 in Figure '5. A spring 3| tends toprevent'said lateral movement of the latch 21. The spring 3i extendsthrough an opening 32 on a bent end 33 of the latch 21.

The form of latch shown in FiguresZ to 7 has a groove 34 that provides.a by-pass from inlet mouth 35 to an outlet 36. It willbe noted inFigures 3, 5, and 7 that the groove 34 becomes shallower continuallyfrom the inlet mouth 35 to the outlet 36. This incline for the groove 34provides an inclined outer surface 3?. A notch 38 is provided on thelatch 21 adjacent to the mouth 35, andbetween the mouth 35 and theoutlet 36. v

A pin 39, arranged on the plate l5 fits in the I is ina raised position,perhaps best shown in Figure 2.

In the modified construction shown in Figures 8, and 9, alatch 49 isprovided with a groove 4| that is substantially the same depth from endto end, as suggested by the outer face 42 which provides the groove 4!.A mouth 43 and outlet 44 are provided for the groove 4|. At the outlet44 a fiat spring 45 normally closes such outlet. The spring 45 is boltedto the latch 49 as suggested at 6. J

Inthe operation of my support, theback I3 is lifted up, whereby thelower edge ofthe latch 21 slides along the pin 39 until such pin isengaged by the notch 38. The back 13 is thereby maintained in its raisedposition. Since the pin 39 is longer than the depth of the outlet 36 andsince the spring -3ltends to maintain the latch 31 in close proximity tothe plate E5, the pin 39 does not enter the outlet 36 as the lower edgeof the latch 2! slides along the pin 39, as stated.

When it is desired to lower the back l3, the seat I2 is raised assuggested by the broken lines 41 in Figure 2. This lifts the latch 21and draws the pin 39 forward into the mouth of the groove 34, asindicated by broken lines 48 of Figure 2. The brace 23 prevents the backl3 from being raised sufiiciently for the mouth 35 to receive the pin39, unless the seat 12 is raised as indicated. When the pin 39 isreceived by the mouth 35, as the back I3 is lowered, the pin 39 ridesalong the groove 34, toward the upper right hand corner of Figure 2.However, due to the lateral movability of the latch 21, the pin ispermitted to escape from the outlet 36 when the latch 21 is moved to thebroken line position 30 of Figure 5. The lower edge of latch 21 thenrides along the pin 39 until the seat [2 and back I3 are in horizontal4. The spring 3| returns the latch 21 to its full line position 31 inFigure 5, after the pin 39 has left the mouth 36 of the groove 34.

In the use of the modified construction, the spring prevents the outlet44 while the back i3 is being raised. The mouth 43 is of suflicient sizeto receive the pin 39. When the pin 39 leaves the mouth 44, aftertraveling through the groove 4|, the pin 39 pushes the spring 45 asideas indicated in broken lines 45 in Figure 9, thus permitting the latch40 to disengage from the pin 39. It will be noted that there is nolateral tipping of the latch 40 in the modified construction shown inFigures 3 and 9. v

While I have illustrated and described what I now regard as thepreferred embodiments of my invention, the constructions are, of course,subject to modifications without departing from the spirit and scope ofmy invention. I, therefore, do not wish to restrict myself to theparticular forms of construction illustrated and described, but desireto avail myself of all modifications that may fall within the scope ofthe appended claims.

I claim:

Having thus described my invention, what I claim and desire to secure byLetters Patent is:

1. A releasable latch for relatively movable parts, comprising a latchpiece projecting laterally from one of said parts, a latch member piv-'otally swingable and laterally yieldable relative to the other part andhaving means engageable by said latch piece in the locking position ofthe latch member, spring means controlling swinging and yieldingmovements of said latch member, said latch member having a laterallyopening groove for by-passing the latch piece relative to saidengageable means, the said groove being of a depth at one end receivingthe latch piece, and being of a lesser depth at its other end preventingentrance of the latch piece in the normal swinging position of the latchmember.

2. In a releasable latch of the character set forth, a swingable andlaterally yieldable onepiece latch member having a laterally openingby-passing groove of varying depth, the entrance end thereof being ofmaximum depth and the exit end being of minimum depth, said memberhaving means forming a locking shoulder intermediate the ends of saidgroove and facing the entrance end thereof, spring means engaging saidmember and controlling its swinging and yielding movements, and a latchpiece for engagement with said shoulder and for passage positions, asshown in Figure pin 39 from entering the through said groove in onedirection, having an effective length to enter the entrance end of thegroove and to be excluded from entering the exit end of the groove.

3. A releasable latch for relatively movable parts, comprising a latchmember pivotally and laterally movable relative to one of the parts andhaving a locking shoulder, pin means on the other part for engagementwith said shoulder to lock the latch member, and thereby the part uponwhich the latch member is mounted, the latch member having a groove toreceive and bypass the pin means relative to said shoulder to anunlocking position of the latch member, the inlet end of the groovebeing of a depth not less than the length of the pin means, the outletend of the groove being of substantially less depth than the said inletend to thus cause lateral motion of the latch member during movement ofthe pin through and from the groove,

and spring means controlling lateral and pivotal movements of the latchmember.

4. A support for relatively movable parts, comprising a latch memberswingably and laterally shiftably mounted upon one of the parts andhaving a locking projection, pin means mounted on the other part forengagement with said projection to lock the latch member, and therebythe part upon which the latch member is mounted, the latch member havingan inclined groove for the pin, to by-pass the pin in one direction withrespect to the said projection, the inlet end of the groove being of adepth not less than the length of the pin and the outlet end of thegroove of substantially less depth than the length of the pin, to thusprevent movement of the pin in the opposite direction thru the groovewhen the latch member is being moved to a locking position with respectto the pin, and spring means for controlling and moving said latchmember.

5. A support for relatively movable parts, comprising a latch membermovably mounted pivot ally and laterally relative to one of the parts,means forming alocking shoulder, pin means mounted on the other part forengaging said shoulder to lock the latch member, and thereby the partupon which the latch member is mounted, the latch member having alaterally opening groove of lengthwise varying depth to by-pass the pinrelative to said shoulder in one bers, the combination of latch engagingmeans on one of the members, and pivoted latching means on the othermember, said latching means comprising a seat for said latch engagingmeans to restrain movement of the movable members in one direction and aguideway for by-passing around said seat having an entrance on one sideof said seat and an exit on the other side of said seat, said guidewaybeing of gradually decreased depth from the entrance to the exit. I '7.In a latch for two relatively movable members, the combination of latchengaging means on one of the members, and latching'means on, the othermember, said latching means compris ing a seat for said latch engagingmeans to restrain movement of the movable members in one direction and aguideway for by-passing around said seati having an entrance on one sideof said;

seat and-an exit on the other side of said seat, said,-

; of comparatively shallow depth to atch for two relatively movablememe, ombination of latch engaging means;- on one n1 mber and latchingmeans on the other; memberfsaid latching means comprising a seatr

